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this circuit serves as a motor controller circuit to easily controlling or varying the RPM & Phase control of a AC motor. source: directly 220VAC Load: approx. 1hp AC motor (600w-1kw) CIRCUIT DIAGRAM: COMPONENT PARTLIST: C1 = 2G ....
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A simple way to produce your own speaker transformer by winding turns on a piece of ferrite rod. The primary winding is made by winding 300 turns of 0. 01mm wire (this is very fine wire) over the secondary and ending with a loop of wire we call the centre....
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Many a times one needs an ex- tra telephone ringer in an ad- joining room to know if there is an incoming call. For example, if the telephone is installed in the drawing room you may need an extra ringer in the bedroom. All that needs to be done is to....
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To this small FM transmitter to change the mic for an audio jack so I can plug it into my mp3 player to listen to songs on my car audio. I looked at some of the transmitters on this site, but I think I`m going to go with this one, as I find it simple, and....
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The following is an example for a very simple and high quality JFET preamp. You can use this to amplify a very low signal sources. FET transistors are usually not used independently in preamplifiers. In most of the cases they are paired with bipolar....
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Learn how to interface LEDs with 8051 Microcontroller. Download free source code and circuit diagram of P89V51RD2 Microcontroller ..
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In this circuit, a 74HC14 hex Schmitt trigger inverter is used as a square wave oscillator to drive a small signal transistor in a class C amplifier configuration. The oscillator frequency can be either fixed by a crystal or made adjustable (VFO) with a....
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This is the circuit diagram of a ding dong sound generator based on two NE555 timer ICs. The circuit is designed to toggle between two adjustable frequencies to produce the ding dong sound. The first NE555 (IC1) is wires as an astable multivibrator operating....
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The design of the circuit is aimed to create a preamplifier for television systems that would operate in the UHF frequency range of 450 MHz to 800 MHz and....
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A very simple battery charger circuit having reverse polarity indication is shown here. The circuit is based on IC L200. L200 is a five pin variable voltage voltage regulator IC. The charging circuit can be fed by the DC voltage from a bridge rectifier or....
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his simple charger uses a single transistor as a constant current source. The voltage across the pair of 1N4148 diodes biases the base of the BD140 medium power transistor....
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Usually when the car door is closed, the dome light just goes OFF. With this circuit, you can have our dome light fade slowly in brightness and finally go OFF. Electronic Transformer Dims halogen Lamp : 05/11/00 EDN-Design Ideas / (several circuits in PDF)....
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The circuit work theory This infrared automatic hand washing device circuit is composed of power supply, infrared transmitting circuit, infrared receiving circuit and control circuit, the circuit is shown in the figure 9-121. The power supply circuit is made....
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* This meter looked like it works well: YouTube - IndikG tor vybuzenG s LM3915 but the schematic is quite different. Google Translate If I followed that schematic, do you think everything would still work You should use a peak detector circuit at the input....
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Schematic diagram in hard copy relating to the compurter CSIRAC. Schematic diagram shows the detailed connections between all the components in a circuit. They are used to build the circuit and later for testing. For CSIRAC, the most common components were....
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The LT ®4430 drives the opto-coupler that crosses the galvanic barrier in an isolated power supply. The IC contains a precision-trimmed reference, a high bandwidth error amplifier, an inverting gain of 6 stage to drive the optocoupler and unique overshoot....
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The MP3 files (up 65, 536) are stored in a micro SDcard. This embedded MP3 module is an universal and compact circuit (37 mm x 27 mm) for playing MP3 audio files. The MP3 module can be used in embedded systems. Usually, the audio output from a laptop`s....
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This i-TRIXX circuit can prevent a whole lot of trouble for those of you who go on holiday in a caravan. It would be a significant damper on your holiday spirit when you are ready to leave the camping and discover that you have used your battery too much and....
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The LM35 series are precision integrated-circuit temperature sensor, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM35 thus has an advantage over linear temperature sensorscalibrated in ° Kelvin, as the user is....
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A lot of electronic circuits in the domain of audio amplifiers are already been published here. This circuit is a little different because it is a four channel amplifier. Each channel of this amplifier can deliver an output of 15Watts into a 4 ohm speaker.....
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This is BTL(bridged tied load) mono amplifier with DC volume Control circuit. This circuit uses TDA7052A/AT that is suitable not only for monitors and TV but also battery fed portable radios and recorders. The difference between conventional DC volume....
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This circuit should be the easiest to tune as well (Reason: when the pulse is at 6V, all transistors should be open switch, so logically, there will never be battery shorts). The pulse voltage source V5 can be replaced by a 555 astable circuit. V6 can be....
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This is the circuit diagram of DC to DC converter based LM2596, the circuit has a single input supply and multiple voltage outputs. The circuit has an input voltage range of 15V to 40V. It has 5 outputs: 3. 3V at 1. 5A; +12V and ’12V at 50 mA each; and +5V....
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I hope that this crystal set is well received by all of you. My #62 radio combines the features of some of my earlier radios. It combines the one piece approach of my #48 set and the dual detector of one of my recent sets. The coil arrangement is a dual....
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The CXA1600M CXA1600P is an 8-pin single-chip bipolar IC for AM Radios This IC includes all functions from the front-end to the power Amplifier The CXA1600M CXA1600P doesnt require any external Filter making external ceramic Filter attachment unnecessary. By....
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If you have an application in which a MOSFET is already used to switch a load, it is relatively easy to add short-circuit or overload protection. Here we make use of the internal resistance RDS(ON), which produces a voltage drop that depends on the amount of....
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In order to obtain a good audio reproduction at different listening levels, a different tone-controls setting should be necessary to suit the well known behaviour of the human ear. In fact, the human ear sensitivity varies in a non-linear manner through the....
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The first positive pulse from a classic 555-based oscillator is always 1. 6 times longer than the following pulses. The difference is caused by the fact that only during the first cycle C2 starts charging up from 0 V. This is generally not a problem, but....